Resource Leak in ImageMagick via Malicious Magick Script

Executive Summary

This vulnerability is a resource leak in ImageMagick versions before 7.1.2-31. Attackers can exploit it by providing a specially crafted magick script that leaves file pointers open. This causes the application to exhaust system resources, potentially leading to denial of service.

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Detection Guidance

To detect this vulnerability, monitor for unusually high file descriptor usage or processes with open file pointers after executing ImageMagick operations. Check for processes using ImageMagick with commands like 'lsof -p <PID>' or 'ps aux | grep magick'. Review logs for repeated ImageMagick script executions that may indicate resource leaks.

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Impact Analysis

The vulnerability can cause system resource exhaustion, leading to degraded performance or complete denial of service. It requires no privileges or user interaction to exploit, making it accessible to remote attackers.

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Compliance Impact

This vulnerability primarily causes resource exhaustion and denial-of-service conditions by leaving file pointers open. It does not directly involve unauthorized data access or disclosure, which are key concerns for GDPR and HIPAA. However, resource exhaustion could indirectly impact system availability, potentially affecting service levels required by these regulations.

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Mitigation Strategies

Upgrade ImageMagick to version 7.1.2-31 or later immediately. Remove or restrict access to untrusted magick scripts. Monitor system resources for signs of exhaustion. Apply patches from official ImageMagick releases or trusted sources.

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